Fuel-saving device.



ma s'rarns "PATENT OFFICE.

WILLIAM C. BLASKE, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, T "HEAT SAVER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION,

FUEL-SAVING DEVICE.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed December 1, 1913. Serial No. 804,058.

To all whom it mu 1 concern Be it known that 1, WILLIAM C. BLASKE,

a citizen of the United States, residing at Chicago, in the county of Cook and State .5 of Illinois, have invented new and useful Improvements in Fuel-Saving Devices,of which the following is a specification.

The invention .relates to new and useful improvements in fuel saving-devices for delivering to the highly heated combustible gases evolved from the fire, a stream of preheated air having a sufficient heat to produce the combustion of gases.

The invention has for an object to provide a fuel saving apparatus of this char acter which may be applied to the stove pipe of a stove burning anthracite coal to prevent the gases escaping from the stove through the air inlet holes thereof which Wlll retard the air before mixing with the gases arising from the combustion .of the fuel.

Another object of the invention is to provide, a fuel saving device of this character wherein the cold air will be permitted to pass freel therethrough, but will be retarded sufli ciently to prevent a draft within the stove pipe.

Another object of the invention is to provide an air preheating chamber for devices of this character which will have a greater radiating surface, thereby permitting the air to be thoroughly preheated before 1nix ing with the gases arising from the combustion of the fuel. I

With the above and other objects in view the invention may be said to consist of the novel features of construction, combination, formation and arrangement of parts as will be hereinafter more fully described and particularly pointed out in the appended claim.

In the accompanying drawings: Figure 1 is a vertical sectional View embodying 'my invention, and, Fig. 2 is a horizontal section through the same taken on the line 2--2 of Fig. 1.

Reference now being had to the accompanying drawingswhereby like and correspending parts will be designated by similar reference characters throughout the several views, the numeral 1 indicates a cylindrical tube forming substantially one section of a stove pipe and having the adjacent sections 2 connected thereto in .the usual manner. Encircling the tube 1 is an outer 5 eylindlical casing 3 forming therebetween the air preheatingchamber. A conicalsection 4 is connected to the casing 3 by means and its lower end is connected to the tube 1 by any suitable means or by rivets 6 as shown- For closing the upper end of the air preheating chamber a circular plate 7 is provided, being connected to the casing 3 by means of the beaded connection 53 and to the tubing 1 by means of the angular plate 9. Supported within the tube 1 is the usual damper 10 being rotatably mounted upon the shaft 11 which is adapted tobe operated through the lever 12 in the usual manner.

The lower Well i of the air preheating openings 14 which form a communication between the air preheating chamber and the atmosphere.- The metal indicated by the numeral 15 being cut away to form the/openings iii-"acts as a battle plate for retarding the air when entering the preheating chamher. A plurality of small openings16 are formed within the tubing 1 and communicate with the lower end of the-air preheating chamber, whereby the preheated air may enterthe smoke stack in small streams.

In using such devices with stoves burning anthracite coal it has been found that the gases in the coals escaped through the air n'eheating chamber and then into the atmosphere which makes the device inoperative. To overcome this objection a cylindrical partition 17 is provided within the air preheating chamber; having its lower end secured in any preferred or well'known manner or by rivets 18, as shown, to the lower upper end of the partition 17 is held in spaced relation from the wall 7 of the chamber whereby the air coming in through the openingsl l as indicated by the arrows, will pass up through the chamber then over the partition 17 where it again will travel down through the chamber and thence pass through the openings 16 in its quiescent state where the same will be permitted to mix with the gases arising from the combustion chamber. As the air within" the preheating chamber is permitted to first travel up and thence down within the chamber it will be thoroughly preheated before entering the chimney 1, thereby the device renders a larger heating surface forthe air.

Leading to the upper end of the tube 1 of the beaded connection 5 at its upper end.

chamber has stamped therein a plurality of wall 4 of the air preheating chamber. The.

is anoverdraft casing 19 having a door 20 hinged thereto whereby-a suitable overdraft may 'be provided for the device.

I. claim:

In a deviceof the character described, a

.flue ,section having the same diameter throughout, a casing concentric with the flue section and spaced therefrom, a plate connecting the upper end ofthe' casing with "the flue section,a frusto conical section connecting the lower end of the casing with the flue section forming an air pie-heating chamber between the flue section and the casing, a partition concentric with the fine being held in spaced relation with the plate connecting the upper end of the casing with the flue section, the frusto conical section of the casing having a. phirality of openings formed therein, bailie plates formed integral with said conical section and projecting over said openings, and the flue section having a plurality of openings formed therein forn'i'ing a means of communication between the lower end of the air pie-heating chamber and the flue for the purpose set'forth.

I WILLIAM G. BLASKE.

Witnesses 1 WILLIAM C. LIN'ION, I. V. 'CUuuAn'.

'30 In witness whereof, I hereunto subscribe 

